I've had someone else bring this issue up. I haven't been able to repeat the issue on my end. Pulled the latest kernel source for 3.8.13, patched with the driver and was able to load the precompiled DTBO files. Searching around online, it appears to be a possible issue with capemgr, because other people have been having the same issue with other drivers or DTB files. I'll try to compile the DTB's with a current version of the dtc compiler.
Nathaniel Lewis 3rd year Undergraduate, Computer Science and Engineering Vice President of the Robotics Society at UC Merced Undergraduate Lab Technician Intern at the Mechatronics, Embedded Systems, and Automation Lab (925) 309 9730 [email protected] On Feb 9, 2014, at 10:01 AM, Lars Vestergaard <[email protected]> wrote: > Hi > > I am sorry if you get multiple messages. But I am not sure if it is working, > Therefore, I try again. > > I have compiled the .dts files and the .dtbo files are generated. > However I get the following message when I load the device tree overlay. > Do you have any aiea how to debug that? > > root@arm:/lib# echo bone_eqep0 > /sys/devices/bone_capemgr.9/slots > -bash: echo: write error: Invalid argument > > / Lars > > Den lørdag den 27. juli 2013 05.08.34 UTC+2 skrev Teknoman117: > For the past couple of weeks I've been writing a driver for the eQEP hardware > in the beaglebone and beaglebone black. I've got the driver as a kernel > patch, the device tree overlays, and C++ and Python bindings for the driver > up on my github now for anyone who wants to try it out. > > https://github.com/Teknoman117/beaglebot/tree/master/encoders > > - Nathaniel Lewis -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
